Hello Guys, I have one question regarding imdb. I know this is world's best movie information site and millions of user has submitted links of this site in millions of other websites. Half of those sites should be good pr, page authority. But i am sure lot of websites are low quality and may be penalize by google. Then why google is not penalizing imdb. If one of us will submit our site in those low quality and penalize site then our site will also got penalizing by google. Then why not imdb. Its just because this is big site or has any other reason??? Waiting for answer?